CSEMP assessment of benzo[a]pyrene in sediment at Hunterston (Clyde)
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 148.02 | 149.22 | -71.01 | 142.02 | | | |
| linear | 2 | 150.01 | 152.30 | -71.00 | 142.01 | 0.008 | 1 | 0.9298 |
| smooth (df = 2) | 3 | 150.71 | 154.55 | -70.35 | 140.71 | 1.303 | 1 | 0.2537 |
| smooth (df = 3) | 4 | 150.21 | 156.21 | -69.11 | 138.21 | 2.493 | 1 | 0.1143 |
| smooth (df = 4) | 5 | 150.83 | 159.74 | -68.42 | 136.83 | 1.383 | 1 | 0.2396 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2000 | 2018 | 5.043 | 5.067 | 0.02479 | 0.28159 | 0.088 | 0.9309 |
| last 20 years | 2000 | 2018 | 5.043 | 5.067 | 0.02479 | 0.28159 | 0.088 | 0.9309 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 158.7 | 30.0 | -1.6661 | 0.1496 | -11.137 | 1.0000 |
| ERL | 158.7 | 430.0 | 0.9965 | 0.1496 | 6.661 | <0.0001 |
Raw data with supporting information
![Raw data with supporting information for assessment of benzo[a]pyrene in sediment at Hunterston (Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_c_()_sdmn_bap_au.jpg "Raw data with supporting information for assessment of benzo[a]pyrene in sediment at Hunterston (Clyde)")
Raw data with assessment
![Raw data with assessment of benzo[a]pyrene in sediment at Hunterston (Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_c_()_sdmn_bap_da.jpg "Raw data with assessment of benzo[a]pyrene in sediment at Hunterston (Clyde)")
Assessment plot
![Assessment plot for benzo[a]pyrene in sediment at Hunterston (Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_c_()_sdmn_bap_as.jpg "Assessment plot for benzo[a]pyrene in sediment at Hunterston (Clyde)")
PAH (parent) data
![PAH (parent) data for assessment of benzo[a]pyrene in sediment at Hunterston (Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_c_()_sdmn_p(p)da.jpg "PAH (parent) data for assessment of benzo[a]pyrene in sediment at Hunterston (Clyde)")
PAH (parent) assessment
![PAH (parent) assessment of benzo[a]pyrene in sediment at Hunterston (Clyde)](/projects/data_management/uk/merman/assessments_and_data_access/csemp/assessments/images/sediment_c_()_sdmn_p(p)as.jpg "PAH (parent) assessment of benzo[a]pyrene in sediment at Hunterston (Clyde)")
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